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[(21)" If "z=x+iy" then the equation "|(...

[(21)" If "z=x+iy" then the equation "|(2z-i)/(z+1)|=m" does not "],[" represents a circle when "],[[" (a) "m=(1)/(2)," (b) "m=1" (c) "m=2," (d) "m=3]]

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